Smart Loads for Voltage Control in Distribution Networks

Zohaib Akhtar; Balarko Chaudhuri; Shu Yuen Ron Hui

doi:10.1109/TSG.2015.2486139

Smart Loads for Voltage Control in Distribution Networks

Zohaib Akhtar
, Balarko Chaudhuri
, Shu Yuen Ron Hui

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

89 Citations (Scopus)

26 Downloads (CityUHK Scholars)

Abstract

This paper shows that the smart loads (SLs) could be effective in mitigating voltage problems caused by photovoltaic (PV) generation and electric vehicle (EV) charging in low-voltage (LV) distribution networks. Limitations of the previously reported SL configuration with only series reactive compensator (SLQ) (one converter) is highlighted in this paper. To overcome these limitations, an additional shunt converter is used in back-To-back (B2B) configuration to support the active power exchanged by the series converter, which increases the flexibility of the SL without requiring any energy storage. Simulation results on a typical U.K. LV distribution network are presented to compare the effectiveness of an SL with B2B converters (SLBCs) against an SLQ in tackling under-and over-voltage problems caused by EV or PV. It is shown that SLBCs can regulate the main voltage more effectively than SLQs especially under over-voltage condition. Although two converters are required for each SLBC, it is shown that the apparent power capacity of each converter is required to be significantly less than that of an equivalent SLQ. © 2010-2012 IEEE.

Original language	English
Pages (from-to)	937-946
Journal	IEEE Transactions on Smart Grid
Volume	8
Issue number	2
DOIs	https://doi.org/10.1109/TSG.2015.2486139
Publication status	Published - 1 Mar 2017
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported in part by the Commonwealth Scholarship Commission, Engineering and Physical Science Research Council, U.K., under Grant EP/K036327/1, and in part by the Hong Kong Research Grant Council under the Theme-based project T23-701/14-N.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

Demand response
distribution network
electric spring (ES)
electric vehicles (EVs)
photovoltaic (PV)
smart load (SL)
voltage control

Publisher's Copyright Statement

This full text is made available under CC-BY 3.0. https://creativecommons.org/licenses/by/3.0/

RGC Funding Information

RGC-funded

Access Output

10.1109/TSG.2015.2486139

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Cite this

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title = "Smart Loads for Voltage Control in Distribution Networks",

abstract = "This paper shows that the smart loads (SLs) could be effective in mitigating voltage problems caused by photovoltaic (PV) generation and electric vehicle (EV) charging in low-voltage (LV) distribution networks. Limitations of the previously reported SL configuration with only series reactive compensator (SLQ) (one converter) is highlighted in this paper. To overcome these limitations, an additional shunt converter is used in back-To-back (B2B) configuration to support the active power exchanged by the series converter, which increases the flexibility of the SL without requiring any energy storage. Simulation results on a typical U.K. LV distribution network are presented to compare the effectiveness of an SL with B2B converters (SLBCs) against an SLQ in tackling under-and over-voltage problems caused by EV or PV. It is shown that SLBCs can regulate the main voltage more effectively than SLQs especially under over-voltage condition. Although two converters are required for each SLBC, it is shown that the apparent power capacity of each converter is required to be significantly less than that of an equivalent SLQ. {\textcopyright} 2010-2012 IEEE.",

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AB - This paper shows that the smart loads (SLs) could be effective in mitigating voltage problems caused by photovoltaic (PV) generation and electric vehicle (EV) charging in low-voltage (LV) distribution networks. Limitations of the previously reported SL configuration with only series reactive compensator (SLQ) (one converter) is highlighted in this paper. To overcome these limitations, an additional shunt converter is used in back-To-back (B2B) configuration to support the active power exchanged by the series converter, which increases the flexibility of the SL without requiring any energy storage. Simulation results on a typical U.K. LV distribution network are presented to compare the effectiveness of an SL with B2B converters (SLBCs) against an SLQ in tackling under-and over-voltage problems caused by EV or PV. It is shown that SLBCs can regulate the main voltage more effectively than SLQs especially under over-voltage condition. Although two converters are required for each SLBC, it is shown that the apparent power capacity of each converter is required to be significantly less than that of an equivalent SLQ. © 2010-2012 IEEE.

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KW - electric spring (ES)

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Smart Loads for Voltage Control in Distribution Networks

Abstract

Bibliographical note

Funding

UN SDGs

Research Keywords

Publisher's Copyright Statement

RGC Funding Information

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